#app {
  width: 800px;
  margin: 0 auto;
}
#app .post {
  width: 150px;
  height: 30px;
  background-color: green;
  text-align: center;
  line-height: 30px;
  border-radius: 5px;
  margin-top: 30px;
  margin-bottom: 20px;
  cursor: pointer;
}
#app .plate-wrap {
  width: 400px;
  padding: 10px;
  border: 1px solid #ddd;
  margin: 30px 0 0 30px;
  display: none;
}
#app .plate-wrap .headline input {
  width: 300px;
  padding: 5px;
  outline: none;
  border: 1px solid #ddd;
}
#app .plate-wrap .plate select {
  width: 150px;
  padding: 5px;
  margin-top: 10px;
  border: 1px solid #ddd;
}
#app .plate-wrap textarea {
  margin-top: 10px;
  width: 300px;
  outline: none;
  border: 1px solid #ddd;
}
#app .plate-wrap .post-end {
  width: 100px;
  height: 30px;
  background-color: green;
  text-align: center;
  line-height: 30px;
  border-radius: 5px;
  margin-top: 20px;
  margin-left: 20px;
  cursor: pointer;
}
